how come I can get BOTH Air Canada and Expedia to pull up a YYC-YVR fare in G-class and it's called a Tango fare? I thought G was the low end of "Fun" fares?

And what the heck is up with the inconsistency? How are we supposed to know what the fare rules are when they have fare basis codes all over the place? And more importantly, how the heck am I supposed to earn status miles properly if AC can't sell me a straight-forward ticket???

From: Calgary, AB (YYC-Calgary Intl.)
To: Vancouver, BC (YVR-All Airports)
Fare Basis Code: G1MTTGB

YYCYVR-AC 22OCT04 *RULE DISPLAY* TARIFF 0363 RULE 4208
* ADD APPLICABLE TAX * FED INSP FEES *
-FARE BASIS CAD NUC PTC FT
G1MTTGB 99.00 76.49 ADT NL
BOOKING CODES G
FIRST TRAVEL -15OCT04 LAST TICKETING -22OCT04
TRAVEL COMPLETE -15DEC04
SEASONS - NO RESTRICTION
PENALTIES - CANCEL-NON REF
CHANGE-30.00 CAD BEFORE DEPART
CHANGE-30.00 CAD AFTER DEPART
FOR ALL CONDITIONS SEE TEXT RULE
DAY/TIME - NO RESTRICTION
ADV RES/TKT - RES REQ 1 DAY BEFORE DEPART
TKTG WITHIN 1 DAY AFTER RESERVATIONS
OR AT LEAST 1 DAY BEFORE DEPART
WHICHEVER IS EARLIER
WAITLISTING/STANDBYS NOT PERMITTED
FURTHER RESTR APPLY SEE TEXT RULE
MIN STAY - NO RESTRICTION
MAX STAY - NO RESTRICTION
BLACKOUTS - NO RESTRICTION
SURCHARGES - 15.00 CAD MISC/OTHER 3.00 CAD MISC/OTHER
STOPOVERS - NOT PERMITTED
NEGOTIATED - NO RESTRICTION
INDUSTRY FARE TYPE - ER - ECONOMY RESTRICTED
ROUTING 5 *** MUST BE DIRECT **
5 FROM-TO YYC-AC-YVR*


(AC's website calls this a Tango fare in G class... what gives?)